An IGBT, or Insulated Gate Bipolar Transistor, is a semiconductor device used to control electrical power. It combines the features of a bipolar junction transistor and a field-effect transistor, allowing it to handle high voltages and currents efficiently. IGBTs are commonly found in applications like inverters, motor drives, and power supplies. The IGBT operates by using a voltage applied to its gate to control the flow of current between its collector and emitter. This makes it ideal for switching applications, where rapid on-off control is needed. Its ability to manage large amounts of power with minimal losses makes it a popular choice in modern electronic systems.